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View 3D VTK files Online

Use this free tool to view your 3D VTK (Visualization Toolkit) files online without needing to install any software. Our VTK viewer tool will generate a real-time 3D preview of your VTK file with Pan and Zoom controls allowing you to see your 3D model from any angle.

Our VTK viewing tool can load most VTK files and we are working on improvements all the time to improve compatibility with all file formats. If you are looking to convert your 2D image files to 3D files such as STL then we have a 2D to 3D conversion tool here.

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How to View your VTK File Online?

Here are 2 simple steps to display your VTK file in any web browser.

Upload an VTK

Click the "Upload a File" button and select an VTK to upload. The maximum file size is 100MB.

View your VTK

Once processed your VTK file will be displayed in the web browser.


How can I convert my VTK file to STL?

First click the "Upload..." button, select your VTK file to upload. Select any configuration options. When the VTK to STL conversion has completed, you can download your STL file straight away.

How long does it take to convert my VTK to STL?

We aim to process all VTK to STL conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the VTK to STL conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my VTK to STL on ImageToStl.com?

Yes, of course! We do not store the VTK file you submit to us. The resulting STL file, once created is deleted 15 minutes after upload and the download link will expire after this time.

Can I convert VTK to STL on Windows, Linux, Android, iOS or Mac OS?

Yes! Our VTK to STL tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our VTK conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.

File format information for VTK

Full NameVisualization Toolkit
Type3D Model
Mime Typeapplication/octet-stream


The VTK file format is a 3D modelling and graphics format supported by the Visualization Toolkit. Created in the '90s the Visualization Toolkit provides a series of data and visual tools for advanced 3D modelling applications. Some example functions of the toolkit include polygon simplification, mesh repair and smoothing and more.

The format has evolved over the years. Starting out as a simple text-based format that could be edited within a simple text editor. Additional features have been added over the years with the most recent version of the format supporting an Xml based format.

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